When to plant pumpkins in Wyoming

Pumpkins
Sow outdoors in Cheyenne
May 28–Jun 11

Across Wyoming the window opens between May 24 and June 21. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Cheyenne
May 28–Jun 11
Last frost, Cheyenne
May 14

Sow outdoors 2–4 weeks after the last frost. For Halloween pumpkins, count back the variety's days to maturity from late September.

Pumpkins planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
CheyenneMay 28–Jun 11
CasperMay 24–Jun 7
GilletteMay 29–Jun 12
LaramieJun 21–Jul 5
Rock SpringsJun 7–Jun 21
SheridanJun 4–Jun 18

In Laramie, Rock Springs, Sheridan the frost-free season is shorter than pumpkins need. Start plants indoors and pick early varieties.

Questions

When should I plant pumpkins in Wyoming?

In Cheyenne, sow outdoors from May 28 to June 11. Across Wyoming the window opens between May 24 and June 21, depending on the local last frost.

How is this date worked out?

Sow outdoors 2–4 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

Is the season long enough for pumpkins everywhere in Wyoming?

Not quite. In Laramie, Rock Springs, Sheridan the frost-free season is shorter than the time pumpkins need to ripen. Start plants indoors and pick an early variety.

More for Wyoming

Pumpkins in other states

Frost dates for every city in Wyoming